package org.example.utils;

import com.auth0.jwt.JWT;
import com.auth0.jwt.JWTVerifier;
import com.auth0.jwt.algorithms.Algorithm;
import com.auth0.jwt.interfaces.Claim;
import com.auth0.jwt.interfaces.DecodedJWT;

import java.util.Date;
import java.util.Map;

public class JwtUtil {
    private static final String KEY = "longyu12";

    // 接收业务数据，生成 token 并返回
    public static String genToken(Map<String, Object> claims) {
        return JWT.create()
                .withClaim("claims", claims)
                .withExpiresAt(new Date(System.currentTimeMillis() + 1000 * 60 * 60 * 12)) // 有效时间为12小时
                .sign(Algorithm.HMAC256(KEY));
    }

    // 接收token，验证token，并返回业务数据
    public static Map<String, Object>  parseToken(String token) {
        return  JWT.require(Algorithm.HMAC256("longyu12")).build().verify(token).getClaim("claims").asMap();
    }
}
